FreeBSD/Linux Kernel Cross Reference
sys/dev/qbus/dhu.c
1 /* $NetBSD: dhu.c,v 1.38 2005/02/26 12:45:06 simonb Exp $ */
2 /*
3 * Copyright (c) 2003, Hugh Graham.
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell and Rick Macklem.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1996 Ken C. Wellsch. All rights reserved.
37 *
38 * This code is derived from software contributed to Berkeley by
39 * Ralph Campbell and Rick Macklem.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the University of
52 * California, Berkeley and its contributors.
53 * 4. Neither the name of the University nor the names of its contributors
54 * may be used to endorse or promote products derived from this software
55 * without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * SUCH DAMAGE.
68 */
69
70 #include <sys/cdefs.h>
71 __KERNEL_RCSID(0, "$NetBSD: dhu.c,v 1.38 2005/02/26 12:45:06 simonb Exp $");
72
73 #include <sys/param.h>
74 #include <sys/systm.h>
75 #include <sys/ioctl.h>
76 #include <sys/tty.h>
77 #include <sys/proc.h>
78 #include <sys/buf.h>
79 #include <sys/conf.h>
80 #include <sys/file.h>
81 #include <sys/uio.h>
82 #include <sys/kernel.h>
83 #include <sys/syslog.h>
84 #include <sys/device.h>
85
86 #include <machine/bus.h>
87 #include <machine/scb.h>
88
89 #include <dev/qbus/ubavar.h>
90
91 #include <dev/qbus/dhureg.h>
92
93 #include "ioconf.h"
94
95 /* A DHU-11 has 16 ports while a DHV-11 has only 8. We use 16 by default */
96
97 #define NDHULINE 16
98
99 #define DHU_M2U(c) ((c)>>4) /* convert minor(dev) to unit # */
100 #define DHU_LINE(u) ((u)&0xF) /* extract line # from minor(dev) */
101
102 struct dhu_softc {
103 struct device sc_dev; /* Device struct used by config */
104 struct evcnt sc_rintrcnt; /* Interrupt statistics */
105 struct evcnt sc_tintrcnt; /* Interrupt statistics */
106 int sc_type; /* controller type, DHU or DHV */
107 int sc_lines; /* number of lines */
108 bus_space_tag_t sc_iot;
109 bus_space_handle_t sc_ioh;
110 bus_dma_tag_t sc_dmat;
111 struct {
112 struct tty *dhu_tty; /* what we work on */
113 bus_dmamap_t dhu_dmah;
114 int dhu_state; /* to manage TX output status */
115 short dhu_cc; /* character count on TX */
116 short dhu_modem; /* modem bits state */
117 } sc_dhu[NDHULINE];
118 };
119
120 #define IS_DHU 16 /* Unibus DHU-11 board linecount */
121 #define IS_DHV 8 /* Q-bus DHV-11 or DHQ-11 */
122
123 #define STATE_IDLE 000 /* no current output in progress */
124 #define STATE_DMA_RUNNING 001 /* DMA TX in progress */
125 #define STATE_DMA_STOPPED 002 /* DMA TX was aborted */
126 #define STATE_TX_ONE_CHAR 004 /* did a single char directly */
127
128 /* Flags used to monitor modem bits, make them understood outside driver */
129
130 #define DML_DTR TIOCM_DTR
131 #define DML_RTS TIOCM_RTS
132 #define DML_CTS TIOCM_CTS
133 #define DML_DCD TIOCM_CD
134 #define DML_RI TIOCM_RI
135 #define DML_DSR TIOCM_DSR
136 #define DML_BRK 0100000 /* no equivalent, we will mask */
137
138 #define DHU_READ_WORD(reg) \
139 bus_space_read_2(sc->sc_iot, sc->sc_ioh, reg)
140 #define DHU_WRITE_WORD(reg, val) \
141 bus_space_write_2(sc->sc_iot, sc->sc_ioh, reg, val)
142 #define DHU_READ_BYTE(reg) \
143 bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg)
144 #define DHU_WRITE_BYTE(reg, val) \
145 bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val)
146
147
148 /* On a stock DHV, channel pairs (0/1, 2/3, etc.) must use */
149 /* a baud rate from the same group. So limiting to B is likely */
150 /* best, although clone boards like the ABLE QHV allow all settings. */
151
152 static const struct speedtab dhuspeedtab[] = {
153 { 0, 0 }, /* Groups */
154 { 50, DHU_LPR_B50 }, /* A */
155 { 75, DHU_LPR_B75 }, /* B */
156 { 110, DHU_LPR_B110 }, /* A and B */
157 { 134, DHU_LPR_B134 }, /* A and B */
158 { 150, DHU_LPR_B150 }, /* B */
159 { 300, DHU_LPR_B300 }, /* A and B */
160 { 600, DHU_LPR_B600 }, /* A and B */
161 { 1200, DHU_LPR_B1200 }, /* A and B */
162 { 1800, DHU_LPR_B1800 }, /* B */
163 { 2000, DHU_LPR_B2000 }, /* B */
164 { 2400, DHU_LPR_B2400 }, /* A and B */
165 { 4800, DHU_LPR_B4800 }, /* A and B */
166 { 7200, DHU_LPR_B7200 }, /* A */
167 { 9600, DHU_LPR_B9600 }, /* A and B */
168 { 19200, DHU_LPR_B19200 }, /* B */
169 { 38400, DHU_LPR_B38400 }, /* A */
170 { -1, -1 }
171 };
172
173 static int dhu_match(struct device *, struct cfdata *, void *);
174 static void dhu_attach(struct device *, struct device *, void *);
175 static void dhurint(void *);
176 static void dhuxint(void *);
177 static void dhustart(struct tty *);
178 static int dhuparam(struct tty *, struct termios *);
179 static int dhuiflow(struct tty *, int);
180 static unsigned dhumctl(struct dhu_softc *,int, int, int);
181
182 CFATTACH_DECL(dhu, sizeof(struct dhu_softc),
183 dhu_match, dhu_attach, NULL, NULL);
184
185 dev_type_open(dhuopen);
186 dev_type_close(dhuclose);
187 dev_type_read(dhuread);
188 dev_type_write(dhuwrite);
189 dev_type_ioctl(dhuioctl);
190 dev_type_stop(dhustop);
191 dev_type_tty(dhutty);
192 dev_type_poll(dhupoll);
193
194 const struct cdevsw dhu_cdevsw = {
195 dhuopen, dhuclose, dhuread, dhuwrite, dhuioctl,
196 dhustop, dhutty, dhupoll, nommap, ttykqfilter, D_TTY
197 };
198
199 /* Autoconfig handles: setup the controller to interrupt, */
200 /* then complete the housecleaning for full operation */
201
202 static int
203 dhu_match(parent, cf, aux)
204 struct device *parent;
205 struct cfdata *cf;
206 void *aux;
207 {
208 struct uba_attach_args *ua = aux;
209 int n;
210
211 /* Reset controller to initialize, enable TX/RX interrupts */
212 /* to catch floating vector info elsewhere when completed */
213
214 bus_space_write_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR,
215 DHU_CSR_MASTER_RESET | DHU_CSR_RXIE | DHU_CSR_TXIE);
216
217 /* Now wait up to 3 seconds for self-test to complete. */
218
219 for (n = 0; n < 300; n++) {
220 DELAY(10000);
221 if ((bus_space_read_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR) &
222 DHU_CSR_MASTER_RESET) == 0)
223 break;
224 }
225
226 /* If the RESET did not clear after 3 seconds, */
227 /* the controller must be broken. */
228
229 if (n >= 300)
230 return 0;
231
232 /* Check whether diagnostic run has signalled a failure. */
233
234 if ((bus_space_read_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR) &
235 DHU_CSR_DIAG_FAIL) != 0)
236 return 0;
237
238 return 1;
239 }
240
241 static void
242 dhu_attach(parent, self, aux)
243 struct device *parent, *self;
244 void *aux;
245 {
246 struct dhu_softc *sc = (void *)self;
247 struct uba_attach_args *ua = aux;
248 unsigned c;
249 int n, i;
250
251 sc->sc_iot = ua->ua_iot;
252 sc->sc_ioh = ua->ua_ioh;
253 sc->sc_dmat = ua->ua_dmat;
254 /* Process the 8 bytes of diagnostic info put into */
255 /* the FIFO following the master reset operation. */
256
257 printf("\n%s:", self->dv_xname);
258 for (n = 0; n < 8; n++) {
259 c = DHU_READ_WORD(DHU_UBA_RBUF);
260
261 if ((c&DHU_DIAG_CODE) == DHU_DIAG_CODE) {
262 if ((c&0200) == 0000)
263 printf(" rom(%d) version %d",
264 ((c>>1)&01), ((c>>2)&037));
265 else if (((c>>2)&07) != 0)
266 printf(" diag-error(proc%d)=%x",
267 ((c>>1)&01), ((c>>2)&07));
268 }
269 }
270
271 c = DHU_READ_WORD(DHU_UBA_STAT);
272
273 sc->sc_type = (c & DHU_STAT_DHU)? IS_DHU: IS_DHV;
274
275 sc->sc_lines = 8; /* default */
276 if (sc->sc_type == IS_DHU && (c & DHU_STAT_MDL))
277 sc->sc_lines = 16;
278
279 printf("\n%s: DH%s-11\n", self->dv_xname,
280 sc->sc_type == IS_DHU ? "U" : "V");
281
282 for (i = 0; i < sc->sc_lines; i++) {
283 struct tty *tp;
284 tp = sc->sc_dhu[i].dhu_tty = ttymalloc();
285 sc->sc_dhu[i].dhu_state = STATE_IDLE;
286 bus_dmamap_create(sc->sc_dmat, tp->t_outq.c_cn, 1,
287 tp->t_outq.c_cn, 0, BUS_DMA_ALLOCNOW|BUS_DMA_NOWAIT,
288 &sc->sc_dhu[i].dhu_dmah);
289 bus_dmamap_load(sc->sc_dmat, sc->sc_dhu[i].dhu_dmah,
290 tp->t_outq.c_cs, tp->t_outq.c_cn, 0, BUS_DMA_NOWAIT);
291
292 }
293
294 /* Now establish RX & TX interrupt handlers */
295
296 uba_intr_establish(ua->ua_icookie, ua->ua_cvec,
297 dhurint, sc, &sc->sc_rintrcnt);
298 uba_intr_establish(ua->ua_icookie, ua->ua_cvec + 4,
299 dhuxint, sc, &sc->sc_tintrcnt);
300 evcnt_attach_dynamic(&sc->sc_rintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
301 sc->sc_dev.dv_xname, "rintr");
302 evcnt_attach_dynamic(&sc->sc_tintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
303 sc->sc_dev.dv_xname, "tintr");
304 }
305
306 /* Receiver Interrupt */
307
308 static void
309 dhurint(arg)
310 void *arg;
311 {
312 struct dhu_softc *sc = arg;
313 struct tty *tp;
314 int cc, line;
315 unsigned c, delta;
316 int overrun = 0;
317
318 while ((c = DHU_READ_WORD(DHU_UBA_RBUF)) & DHU_RBUF_DATA_VALID) {
319
320 /* Ignore diagnostic FIFO entries. */
321
322 if ((c & DHU_DIAG_CODE) == DHU_DIAG_CODE)
323 continue;
324
325 cc = c & 0xFF;
326 line = DHU_LINE(c>>8);
327 tp = sc->sc_dhu[line].dhu_tty;
328
329 /* LINK.TYPE is set so we get modem control FIFO entries */
330
331 if ((c & DHU_DIAG_CODE) == DHU_MODEM_CODE) {
332 c = (c << 8);
333 /* Do MDMBUF flow control, wakeup sleeping opens */
334 if (c & DHU_STAT_DCD) {
335 if (!(tp->t_state & TS_CARR_ON))
336 (void)(*tp->t_linesw->l_modem)(tp, 1);
337 }
338 else if ((tp->t_state & TS_CARR_ON) &&
339 (*tp->t_linesw->l_modem)(tp, 0) == 0)
340 (void) dhumctl(sc, line, 0, DMSET);
341
342 /* Do CRTSCTS flow control */
343 delta = c ^ sc->sc_dhu[line].dhu_modem;
344 sc->sc_dhu[line].dhu_modem = c;
345 if ((delta & DHU_STAT_CTS) &&
346 (tp->t_state & TS_ISOPEN) &&
347 (tp->t_cflag & CRTSCTS)) {
348 if (c & DHU_STAT_CTS) {
349 tp->t_state &= ~TS_TTSTOP;
350 ttstart(tp);
351 } else {
352 tp->t_state |= TS_TTSTOP;
353 dhustop(tp, 0);
354 }
355 }
356 continue;
357 }
358
359 if (!(tp->t_state & TS_ISOPEN)) {
360 wakeup((caddr_t)&tp->t_rawq);
361 continue;
362 }
363
364 if ((c & DHU_RBUF_OVERRUN_ERR) && overrun == 0) {
365 log(LOG_WARNING, "%s: silo overflow, line %d\n",
366 sc->sc_dev.dv_xname, line);
367 overrun = 1;
368 }
369 /* A BREAK key will appear as a NULL with a framing error */
370 if (c & DHU_RBUF_FRAMING_ERR)
371 cc |= TTY_FE;
372 if (c & DHU_RBUF_PARITY_ERR)
373 cc |= TTY_PE;
374
375 (*tp->t_linesw->l_rint)(cc, tp);
376 }
377 }
378
379 /* Transmitter Interrupt */
380
381 static void
382 dhuxint(arg)
383 void *arg;
384 {
385 struct dhu_softc *sc = arg;
386 struct tty *tp;
387 int line, i;
388
389 while ((i = DHU_READ_BYTE(DHU_UBA_CSR_HI)) & (DHU_CSR_TX_ACTION >> 8)) {
390
391 line = DHU_LINE(i);
392 tp = sc->sc_dhu[line].dhu_tty;
393
394 if (i & (DHU_CSR_TX_DMA_ERROR >> 8))
395 printf("%s: DMA ERROR on line: %d\n",
396 sc->sc_dev.dv_xname, line);
397 if (i & (DHU_CSR_DIAG_FAIL >> 8))
398 printf("%s: DIAG FAIL on line: %d\n",
399 sc->sc_dev.dv_xname, line);
400
401 tp->t_state &= ~TS_BUSY;
402 if (tp->t_state & TS_FLUSH)
403 tp->t_state &= ~TS_FLUSH;
404 else {
405 if (sc->sc_dhu[line].dhu_state == STATE_DMA_STOPPED)
406 sc->sc_dhu[line].dhu_cc -=
407 DHU_READ_WORD(DHU_UBA_TBUFCNT);
408 ndflush(&tp->t_outq, sc->sc_dhu[line].dhu_cc);
409 sc->sc_dhu[line].dhu_cc = 0;
410 }
411
412 sc->sc_dhu[line].dhu_state = STATE_IDLE;
413
414 (*tp->t_linesw->l_start)(tp);
415 }
416 }
417
418 int
419 dhuopen(dev, flag, mode, p)
420 dev_t dev;
421 int flag, mode;
422 struct proc *p;
423 {
424 struct tty *tp;
425 int unit, line;
426 struct dhu_softc *sc;
427 int s, error = 0;
428
429 unit = DHU_M2U(minor(dev));
430 line = DHU_LINE(minor(dev));
431
432 if (unit >= dhu_cd.cd_ndevs || dhu_cd.cd_devs[unit] == NULL)
433 return (ENXIO);
434
435 sc = dhu_cd.cd_devs[unit];
436
437 if (line >= sc->sc_lines)
438 return ENXIO;
439
440 if (sc->sc_type == IS_DHU) {
441 s = spltty(); /* CSR 3:0 must be 0 */
442 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE);
443 DHU_WRITE_BYTE(DHU_UBA_RXTIME, 10);
444 splx(s); /* RX int delay 10ms */
445 }
446
447 s = spltty();
448 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line);
449 sc->sc_dhu[line].dhu_modem = DHU_READ_WORD(DHU_UBA_STAT);
450 (void) splx(s);
451
452 tp = sc->sc_dhu[line].dhu_tty;
453
454 tp->t_oproc = dhustart;
455 tp->t_param = dhuparam;
456 tp->t_hwiflow = dhuiflow;
457 tp->t_dev = dev;
458 if ((tp->t_state & TS_ISOPEN) == 0) {
459 ttychars(tp);
460 if (tp->t_ispeed == 0) {
461 tp->t_iflag = TTYDEF_IFLAG;
462 tp->t_oflag = TTYDEF_OFLAG;
463 tp->t_cflag = TTYDEF_CFLAG;
464 tp->t_lflag = TTYDEF_LFLAG;
465 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
466 }
467 (void) dhuparam(tp, &tp->t_termios);
468 ttsetwater(tp);
469 } else if ((tp->t_state & TS_XCLUDE) && curproc->p_ucred->cr_uid != 0)
470 return (EBUSY);
471 /* Use DMBIS and *not* DMSET or else we clobber incoming bits */
472 if (dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS) & DML_DCD)
473 tp->t_state |= TS_CARR_ON;
474 s = spltty();
475 while (!(flag & O_NONBLOCK) && !(tp->t_cflag & CLOCAL) &&
476 !(tp->t_state & TS_CARR_ON)) {
477 tp->t_wopen++;
478 error = ttysleep(tp, (caddr_t)&tp->t_rawq,
479 TTIPRI | PCATCH, ttopen, 0);
480 tp->t_wopen--;
481 if (error)
482 break;
483 }
484 (void) splx(s);
485 if (error)
486 return (error);
487 return ((*tp->t_linesw->l_open)(dev, tp));
488 }
489
490 /*ARGSUSED*/
491 int
492 dhuclose(dev, flag, mode, p)
493 dev_t dev;
494 int flag, mode;
495 struct proc *p;
496 {
497 struct tty *tp;
498 int unit, line;
499 struct dhu_softc *sc;
500
501 unit = DHU_M2U(minor(dev));
502 line = DHU_LINE(minor(dev));
503
504 sc = dhu_cd.cd_devs[unit];
505
506 tp = sc->sc_dhu[line].dhu_tty;
507
508 (*tp->t_linesw->l_close)(tp, flag);
509
510 /* Make sure a BREAK state is not left enabled. */
511
512 (void) dhumctl(sc, line, DML_BRK, DMBIC);
513
514 /* Do a hangup if so required. */
515
516 if ((tp->t_cflag & HUPCL) || tp->t_wopen ||
517 !(tp->t_state & TS_ISOPEN))
518 (void) dhumctl(sc, line, 0, DMSET);
519
520 return (ttyclose(tp));
521 }
522
523 int
524 dhuread(dev, uio, flag)
525 dev_t dev;
526 struct uio *uio;
527 int flag;
528 {
529 struct dhu_softc *sc;
530 struct tty *tp;
531
532 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))];
533
534 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty;
535 return ((*tp->t_linesw->l_read)(tp, uio, flag));
536 }
537
538 int
539 dhuwrite(dev, uio, flag)
540 dev_t dev;
541 struct uio *uio;
542 int flag;
543 {
544 struct dhu_softc *sc;
545 struct tty *tp;
546
547 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))];
548
549 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty;
550 return ((*tp->t_linesw->l_write)(tp, uio, flag));
551 }
552
553 int
554 dhupoll(dev, events, p)
555 dev_t dev;
556 int events;
557 struct proc *p;
558 {
559 struct dhu_softc *sc;
560 struct tty *tp;
561
562 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))];
563
564 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty;
565 return ((*tp->t_linesw->l_poll)(tp, events, p));
566 }
567
568 /*ARGSUSED*/
569 int
570 dhuioctl(dev, cmd, data, flag, p)
571 dev_t dev;
572 u_long cmd;
573 caddr_t data;
574 int flag;
575 struct proc *p;
576 {
577 struct dhu_softc *sc;
578 struct tty *tp;
579 int unit, line;
580 int error;
581
582 unit = DHU_M2U(minor(dev));
583 line = DHU_LINE(minor(dev));
584 sc = dhu_cd.cd_devs[unit];
585 tp = sc->sc_dhu[line].dhu_tty;
586
587 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p);
588 if (error != EPASSTHROUGH)
589 return (error);
590
591 error = ttioctl(tp, cmd, data, flag, p);
592 if (error != EPASSTHROUGH)
593 return (error);
594
595 switch (cmd) {
596
597 case TIOCSBRK:
598 (void) dhumctl(sc, line, DML_BRK, DMBIS);
599 break;
600
601 case TIOCCBRK:
602 (void) dhumctl(sc, line, DML_BRK, DMBIC);
603 break;
604
605 case TIOCSDTR:
606 (void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS);
607 break;
608
609 case TIOCCDTR:
610 (void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIC);
611 break;
612
613 case TIOCMSET:
614 (void) dhumctl(sc, line, *(int *)data, DMSET);
615 break;
616
617 case TIOCMBIS:
618 (void) dhumctl(sc, line, *(int *)data, DMBIS);
619 break;
620
621 case TIOCMBIC:
622 (void) dhumctl(sc, line, *(int *)data, DMBIC);
623 break;
624
625 case TIOCMGET:
626 *(int *)data = (dhumctl(sc, line, 0, DMGET) & ~DML_BRK);
627 break;
628
629 default:
630 return (EPASSTHROUGH);
631 }
632 return (0);
633 }
634
635 struct tty *
636 dhutty(dev)
637 dev_t dev;
638 {
639 struct dhu_softc *sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))];
640 struct tty *tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty;
641 return (tp);
642 }
643
644 /*ARGSUSED*/
645 void
646 dhustop(tp, flag)
647 struct tty *tp;
648 int flag;
649 {
650 struct dhu_softc *sc;
651 int line;
652 int s;
653
654 s = spltty();
655
656 if (tp->t_state & TS_BUSY) {
657
658 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))];
659 line = DHU_LINE(minor(tp->t_dev));
660
661 if (sc->sc_dhu[line].dhu_state == STATE_DMA_RUNNING) {
662
663 sc->sc_dhu[line].dhu_state = STATE_DMA_STOPPED;
664
665 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line);
666 DHU_WRITE_WORD(DHU_UBA_LNCTRL,
667 DHU_READ_WORD(DHU_UBA_LNCTRL) |
668 DHU_LNCTRL_DMA_ABORT);
669 }
670
671 if (!(tp->t_state & TS_TTSTOP))
672 tp->t_state |= TS_FLUSH;
673 }
674 (void) splx(s);
675 }
676
677 static void
678 dhustart(tp)
679 struct tty *tp;
680 {
681 struct dhu_softc *sc;
682 int line, cc;
683 int addr;
684 int s;
685
686 s = spltty();
687 if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
688 goto out;
689 if (tp->t_outq.c_cc <= tp->t_lowat) {
690 if (tp->t_state & TS_ASLEEP) {
691 tp->t_state &= ~TS_ASLEEP;
692 wakeup((caddr_t)&tp->t_outq);
693 }
694 selwakeup(&tp->t_wsel);
695 }
696 if (tp->t_outq.c_cc == 0)
697 goto out;
698 cc = ndqb(&tp->t_outq, 0);
699 if (cc == 0)
700 goto out;
701
702 tp->t_state |= TS_BUSY;
703
704 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))];
705
706 line = DHU_LINE(minor(tp->t_dev));
707
708 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line);
709
710 sc->sc_dhu[line].dhu_cc = cc;
711
712 if (cc == 1 && sc->sc_type == IS_DHV) {
713
714 sc->sc_dhu[line].dhu_state = STATE_TX_ONE_CHAR;
715
716 DHU_WRITE_WORD(DHU_UBA_TXCHAR,
717 DHU_TXCHAR_DATA_VALID | *tp->t_outq.c_cf);
718
719 } else {
720
721 sc->sc_dhu[line].dhu_state = STATE_DMA_RUNNING;
722
723 addr = sc->sc_dhu[line].dhu_dmah->dm_segs[0].ds_addr +
724 (tp->t_outq.c_cf - tp->t_outq.c_cs);
725
726 DHU_WRITE_WORD(DHU_UBA_TBUFCNT, cc);
727 DHU_WRITE_WORD(DHU_UBA_TBUFAD1, addr & 0xFFFF);
728 DHU_WRITE_WORD(DHU_UBA_TBUFAD2, ((addr>>16) & 0x3F) |
729 DHU_TBUFAD2_TX_ENABLE);
730 DHU_WRITE_WORD(DHU_UBA_LNCTRL,
731 DHU_READ_WORD(DHU_UBA_LNCTRL) & ~DHU_LNCTRL_DMA_ABORT);
732 DHU_WRITE_WORD(DHU_UBA_TBUFAD2,
733 DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_DMA_START);
734 }
735 out:
736 (void) splx(s);
737 return;
738 }
739
740 static int
741 dhuparam(tp, t)
742 struct tty *tp;
743 struct termios *t;
744 {
745 struct dhu_softc *sc;
746 int cflag = t->c_cflag;
747 int ispeed = ttspeedtab(t->c_ispeed, dhuspeedtab);
748 int ospeed = ttspeedtab(t->c_ospeed, dhuspeedtab);
749 unsigned lpr, lnctrl;
750 int unit, line;
751 int s;
752
753 unit = DHU_M2U(minor(tp->t_dev));
754 line = DHU_LINE(minor(tp->t_dev));
755
756 sc = dhu_cd.cd_devs[unit];
757
758 /* check requested parameters */
759 if (ospeed < 0 || ispeed < 0)
760 return (EINVAL);
761
762 tp->t_ispeed = t->c_ispeed;
763 tp->t_ospeed = t->c_ospeed;
764 tp->t_cflag = cflag;
765
766 if (ospeed == 0) {
767 (void) dhumctl(sc, line, 0, DMSET); /* hang up line */
768 return (0);
769 }
770
771 s = spltty();
772 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line);
773
774 lpr = ((ispeed&017)<<8) | ((ospeed&017)<<12) ;
775
776 switch (cflag & CSIZE) {
777
778 case CS5:
779 lpr |= DHU_LPR_5_BIT_CHAR;
780 break;
781
782 case CS6:
783 lpr |= DHU_LPR_6_BIT_CHAR;
784 break;
785
786 case CS7:
787 lpr |= DHU_LPR_7_BIT_CHAR;
788 break;
789
790 default:
791 lpr |= DHU_LPR_8_BIT_CHAR;
792 break;
793 }
794
795 if (cflag & PARENB)
796 lpr |= DHU_LPR_PARENB;
797 if (!(cflag & PARODD))
798 lpr |= DHU_LPR_EPAR;
799 if (cflag & CSTOPB)
800 lpr |= DHU_LPR_2_STOP;
801
802 DHU_WRITE_WORD(DHU_UBA_LPR, lpr);
803
804 DHU_WRITE_WORD(DHU_UBA_TBUFAD2,
805 DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_TX_ENABLE);
806
807 lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL);
808
809 /* Setting LINK.TYPE enables modem signal change interrupts. */
810
811 lnctrl |= (DHU_LNCTRL_RX_ENABLE | DHU_LNCTRL_LINK_TYPE);
812
813 /* Enable the auto XON/XOFF feature on the controller */
814
815 if (t->c_iflag & IXON)
816 lnctrl |= DHU_LNCTRL_OAUTO;
817 else
818 lnctrl &= ~DHU_LNCTRL_OAUTO;
819
820 if (t->c_iflag & IXOFF)
821 lnctrl |= DHU_LNCTRL_IAUTO;
822 else
823 lnctrl &= ~DHU_LNCTRL_IAUTO;
824
825 DHU_WRITE_WORD(DHU_UBA_LNCTRL, lnctrl);
826
827 (void) splx(s);
828 return (0);
829 }
830
831 static int
832 dhuiflow(tp, flag)
833 struct tty *tp;
834 int flag;
835 {
836 struct dhu_softc *sc;
837 int line = DHU_LINE(minor(tp->t_dev));
838
839 if (tp->t_cflag & CRTSCTS) {
840 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))];
841 (void) dhumctl(sc, line, DML_RTS, ((flag)? DMBIC: DMBIS));
842 return (1);
843 }
844 return (0);
845 }
846
847 static unsigned
848 dhumctl(sc, line, bits, how)
849 struct dhu_softc *sc;
850 int line, bits, how;
851 {
852 unsigned status;
853 unsigned lnctrl;
854 unsigned mbits;
855 int s;
856
857 s = spltty();
858
859 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line);
860
861 mbits = 0;
862
863 /* external signals as seen from the port */
864
865 status = DHU_READ_WORD(DHU_UBA_STAT);
866
867 if (status & DHU_STAT_CTS)
868 mbits |= DML_CTS;
869
870 if (status & DHU_STAT_DCD)
871 mbits |= DML_DCD;
872
873 if (status & DHU_STAT_DSR)
874 mbits |= DML_DSR;
875
876 if (status & DHU_STAT_RI)
877 mbits |= DML_RI;
878
879 /* internal signals/state delivered to port */
880
881 lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL);
882
883 if (lnctrl & DHU_LNCTRL_RTS)
884 mbits |= DML_RTS;
885
886 if (lnctrl & DHU_LNCTRL_DTR)
887 mbits |= DML_DTR;
888
889 if (lnctrl & DHU_LNCTRL_BREAK)
890 mbits |= DML_BRK;
891
892 switch (how) {
893
894 case DMSET:
895 mbits = bits;
896 break;
897
898 case DMBIS:
899 mbits |= bits;
900 break;
901
902 case DMBIC:
903 mbits &= ~bits;
904 break;
905
906 case DMGET:
907 (void) splx(s);
908 return (mbits);
909 }
910
911 if (mbits & DML_RTS)
912 lnctrl |= DHU_LNCTRL_RTS;
913 else
914 lnctrl &= ~DHU_LNCTRL_RTS;
915
916 if (mbits & DML_DTR)
917 lnctrl |= DHU_LNCTRL_DTR;
918 else
919 lnctrl &= ~DHU_LNCTRL_DTR;
920
921 if (mbits & DML_BRK)
922 lnctrl |= DHU_LNCTRL_BREAK;
923 else
924 lnctrl &= ~DHU_LNCTRL_BREAK;
925
926 DHU_WRITE_WORD(DHU_UBA_LNCTRL, lnctrl);
927
928 (void) splx(s);
929 return (mbits);
930 }
Cache object: 622ad00c13d974d8a7407079c296c76e
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